Chem219 Module 2 Questions and Correct Answers/ Latest Update / Already Graded

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Chem219 Module 2 Questions and Correct
Answers/ Latest Update / Already Graded
Hydrocarbons

Ans: Compounds composed of only C and H


Main source of hydrocarbons

Ans: Fossil fuels


Saturation vs unsaturation

Ans: Saturation is only in C-C single bonds (alkanes)
Unsaturation is in alkenes/alkynes where there is a lack of H due
to carbon bonding to itself


General molecular formula of alkanes

Ans: CnH2n+2


Parent name for branched alkanes

Ans: Find the longest continuous carbon chain


Substituent
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Ans: Group attached to the parent chain


Alkyl groups

Ans: Saturated hydrocarbon substituents ex methyl, ethyl


If there are substituents, where do you start numbering alkanes

Ans: Closest to the first branch


Two types of the same substituent in alkanes

Ans: "di" or "tri" prefixes ex trimethylbutane


2 different substituents in alkanes

Ans: Alphabetize them ex. 3-ethyl,2-methylpentane


2 substituents equidistant to the end in alkanes

Ans: Alphabetic priority gets the lower number


Isopropyl

Ans: Y-shaped, 3c

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